ci(rules): improve docs related jobs rules

- build_docs_pdf: now ignore docs related file patterns

- deploy_docs_preview: now ignore docs related file patterns

- .rules:build:docs: related jobs will not be triggered with `build` label

.gitlab/ci/dependencies/dependencies.yml

@@ -49,15 +49,20 @@
 
 "build:docs":
   labels:
-    - build
     - docs
     - build_docs  # for backward compatibility
   patterns:
     - docs
   deploy:
-    - preview
     - production
 
+"build:docs:label-only":
+  labels:
+    - docs
+    - build_docs  # for backward compatibility
+  deploy:
+    - preview
+
 "build":
   labels:
     - build

.gitlab/ci/docs.yml

@@ -68,6 +68,7 @@ build_docs_html:
 build_docs_pdf:
   extends:
     - .build_docs_build_stage_template
+    - .rules:build:docs:label-only
   artifacts:
     when: always
     paths:
@@ -97,7 +98,7 @@ build_docs_pdf:
 deploy_docs_preview:
   extends:
     - .deploy_docs_template
-    - .rules:build:docs-preview
+    - .rules:build:docs:label-only-preview
   dependencies:  # set dependencies to null to avoid missing artifacts issue
   needs:
     - build_docs_html

.gitlab/ci/rules.yml

@@ -565,19 +565,6 @@
 .rules:build:docs:
   rules:
     - <<: *if-protected
-    - <<: *if-label-build
-    - <<: *if-title-build
-    - <<: *if-label-build_docs
-    - <<: *if-title-build_docs
-    - <<: *if-label-docs
-    - <<: *if-title-docs
-    - <<: *if-dev-push
-      changes: *patterns-docs
-
-.rules:build:docs-preview:
-  rules:
-    - <<: *if-label-build
-    - <<: *if-title-build
     - <<: *if-label-build_docs
     - <<: *if-title-build_docs
     - <<: *if-label-docs
@@ -589,6 +576,21 @@
   rules:
     - <<: *if-protected-no_label
 
+.rules:build:docs:label-only:
+  rules:
+    - <<: *if-protected
+    - <<: *if-label-build_docs
+    - <<: *if-title-build_docs
+    - <<: *if-label-docs
+    - <<: *if-title-docs
+
+.rules:build:docs:label-only-preview:
+  rules:
+    - <<: *if-label-build_docs
+    - <<: *if-title-build_docs
+    - <<: *if-label-docs
+    - <<: *if-title-docs
+
 .rules:build:example_test-esp32:
   rules:
     - <<: *if-protected